Lecture_Notes_102809b

Lecture_Notes_102809b - THE NUCLEUS: A CHEMISTS VIEW...

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Unformatted text preview: THE NUCLEUS: A CHEMISTS VIEW Zumdahl Chapter 18 Isotopes y Nuclide A unique atom represented by y Atomic Number (Z) the number of protons in the nucleus y Mass Number (A) the sum of the number of protons and the number of neutrons in the nucleus y Nucleons particles found in the nucleus X A Z Which of the following appropriately represents an atom with Z = 9 and 10 neutrons? 1 9 9 F 1 9 1 N e N o t e n o u g h i n f o r m a t i o n 93% 1% 6% 1. 19 9 F 2. 19 10 Ne 3. Not enough information Which of the following has an atomic number of 53 and 79 neutrons? 1 3 2 7 9 A u 1 3 2 5 3 I 1 2 2 5 3 I 1 2 2 7 9 A u 8% 0% 6% 86% 1. 132 79 Au 2. 132 53 I 3. 122 53 I 4. 122 79 Au Nuclear Stability y Thermodynamic Stability the potential energy of a particular nucleus as compared to the sum of the potential energies of its components y Nuclear Stability the probability that a nucleus will undergo decomposition to form a different nucleus y Radioactive Decay the spontaneous decomposition of a nucleus to form a different nucleus Types of Radioactive Decay...
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This note was uploaded on 01/06/2011 for the course CHEM 105BLG at USC.

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Lecture_Notes_102809b - THE NUCLEUS: A CHEMISTS VIEW...

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